EP1136260A2 - Führungsvorrichtung für Blattartiges Material einer Druckmaschine für Schön- und Widerdruck. - Google Patents

Führungsvorrichtung für Blattartiges Material einer Druckmaschine für Schön- und Widerdruck. Download PDF

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Publication number
EP1136260A2
EP1136260A2 EP01105427A EP01105427A EP1136260A2 EP 1136260 A2 EP1136260 A2 EP 1136260A2 EP 01105427 A EP01105427 A EP 01105427A EP 01105427 A EP01105427 A EP 01105427A EP 1136260 A2 EP1136260 A2 EP 1136260A2
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EP
European Patent Office
Prior art keywords
sheet
cylinder
printing cylinder
paper
suction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01105427A
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English (en)
French (fr)
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EP1136260A3 (de
EP1136260B1 (de
Inventor
Masakasu c/o Komori Corporation Hiwatashi
Isao c/o Komori Corporation Komuro
Tomoya c/o Komori Corporation Kanayama
Akehiro c/o Komori Corporation Kusaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komori Corp
Original Assignee
Komori Corp
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Filing date
Publication date
Application filed by Komori Corp filed Critical Komori Corp
Publication of EP1136260A2 publication Critical patent/EP1136260A2/de
Publication of EP1136260A3 publication Critical patent/EP1136260A3/de
Application granted granted Critical
Publication of EP1136260B1 publication Critical patent/EP1136260B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines

Definitions

  • This invention relates to a sheet-like material guide apparatus of a perfecting press which prints both sides of a sheet-like material. More specifically, the invention relates to a sheet-like material guide apparatus for preventing double printing (doubling) or smudging of a sheet-like material caused when the sheet-like material touches an image on a circumferential surface of a printing cylinder before printing is performed.
  • the above type of apparatus is disclosed, for example, in Japanese Utility Model Publication No. 1990-2595.
  • This apparatus prints both sides of a sheet-like material at a point of contact between an upper blanket cylinder and a lower blanket cylinder.
  • the apparatus takes the following guiding measures: 1 ⁇ A clearance is provided between a transfer cylinder and the upper blanket cylinder. 2 ⁇ A vacuum is applied to the circumferential surface of the transfer cylinder to attract the sheet-like material by suction to the circumferential surface of the transfer cylinder. 3 ⁇
  • the peripheral speed of the transfer cylinder is made slightly higher than the peripheral speed of the upper blanket cylinder.
  • a paper guide is provided for guiding the sheet-like material to the point of contact between the upper blanket cylinder and the lower blanket cylinder to prevent contact of the sheet-like material with the upper or lower blanket cylinder. Because of these measures, the sheet-like material, which is gripped by a gripper device of the upper blanket cylinder and guided toward the aforesaid point of contact (printing unit), is fed by the transfer cylinder while being in intimate contact with the circumferential surface of the transfer cylinder without touching the upper blanket cylinder. At this time, a trailing edge of the sheet-like material is fed at a slightly higher speed than the speed of an end of the sheet-like material gripped by the upper blanket cylinder. The fed sheet-like material travels downward and moves along the paper guide.
  • the sheet-like material does not make contact with a site near a point of gripping change from the transfer cylinder to the upper blanket cylinder, or with the lower blanket cylinder. Nor does the sheet-like material contact the upper blanket cylinder at a site close to the printing unit. Hence, a printing trouble, such as doubling or smudging, can be prevented, resulting in a marked improvement of the quality of a printing product, and a decrease in the amount of wasted paper.
  • the foregoing apparatus of the earlier technology has the upper and lower blanket cylinders arranged vertically in parallel.
  • this configuration assume that many plate cylinders are provided in contact with the circumferential surfaces of the blanket cylinders, and an inking device is provided for each of the plate cylinders.
  • the printing press will become so huge that problems with space and operability will occur.
  • a pair of blanket cylinders are generally disposed parallel in a horizontal direction, as shown in Japanese Patent No. 2,612,594 (FIG. 1).
  • FIG. 1 Japanese Patent No. 2,612,594
  • a sheet-like material contacts the circumferential surface of the blanket cylinder before being printed at a point of contact between the pair of blanket cylinders, and is thus double printed or smudged.
  • the aforementioned guiding measures 1 ⁇ to 4 ⁇ disclosed in Japanese Utility Model Publication No. 1990-2595 may be applied to the perfecting press.
  • the sheet-like material will move along a guide surface under its own weight.
  • the guide surface lies vertically.
  • the sheet-like material moves irregularly without moving along the paper guide, so that doubling or smudging occurs as in a case where the guiding measures are not taken.
  • the present invention has been accomplished in consideration of the above-described circumstances.
  • the object of the invention is to provide a sheet-like material guide apparatus of a perfecting press having two printing cylinders arranged nearly horizontally for printing both sides of a sheet-like material, the sheet-like material guide apparatus being capable of preventing a printing trouble, such as doubling or smudging, caused by the sheet-like material touching the circumferential surface of the printing cylinder before being printed.
  • a sheet-like material guide apparatus of a perfecting press comprising a first printing cylinder and a second printing cylinder arranged nearly horizontally, the first printing cylinder having a holding device for holding a sheet-like material and being adapted to print one side of the sheet-like material, and the second printing cylinder being in contact with the first printing cylinder and being adapted to print the other side of the sheet-like material, wherein a suction guide for sucking and guiding the sheet-like material transported by the first printing cylinder is provided between a transport cylinder located directly ahead of the first printing cylinder and the second printing cylinder, and air blowing means is provided for blowing air between the sheet-like material transferred from the transport cylinder to the first printing cylinder and a circumferential surface of the first printing cylinder.
  • This feature can prevent a printing trouble, such doubling or smudging, due to the sheet-like material touching the circumferential surface of the cylinder before a printing pressure is applied. Furthermore, the trailing edge of the sheet-like material does not irregularly move. Thus, the printing quality is improved, and the percentage of wasted paper is decreased.
  • a clearance between a guide surface of the suction guide and the circumferential surface of the first printing cylinder may be progressively narrowed along a flow of the sheet-like material.
  • transport belts running at nearly the same speed as the transport speed of the sheet-like material may be passed over the suction guide.
  • the transport cylinder may be slightly spaced from the first printing cylinder, and the peripheral speed of the transport cylinder may be made slightly higher than the peripheral speed of the first printing cylinder, in a range in which transfer of the sheet-like material to the first printing cylinder can be performed.
  • the suction guide may be divided into a plurality of parts in a flowing direction of the sheet-like material, and the plurality of parts may be connected to a negative pressure source.
  • the suction guide may be composed of a suction chamber having a plurality of fans disposed in a flowing direction of the sheet-like material, and the sheet-like material may be attracted by suction to a guide surface of the suction chamber which comprises an arc-shaped porous plate.
  • the air blowing means may have a valve, and the valve may stop blowing of air to a trailing edge of the sheet-like material held by the first printing cylinder.
  • FIG. 1 is an enlarged view of an essential part of a perfecting multicolor offset press showing a first embodiment of the present invention.
  • FIG. 2 is a general side view of the perfecting multicolor offset press.
  • a blanketed impression cylinder (first printing cylinder) 2 having a gripper device (holding device), and a blanket cylinder (second printing cylinder) 3 having no gripper device are horizontally borne in a printing unit 1 of the perfecting multicolor offset press. Circumferential surfaces of the blanketed impression cylinder 2 and the blanket cylinder 3 are in contact with each other.
  • Four plate cylinders 4 are arranged on the circumferential surface of the blanketed impression cylinder 2, and four plate cylinders 5 are also arranged on the circumferential surface of the blanket cylinder 3.
  • Inking units 6, 7 are provided movably so as to be able to approach and leave the plate cylinders 4, 5. The inking units 6, 7 can supply ink and water to the plate cylinders 4, 5 while contacting the plate cylinders 4, 5.
  • a delivery cylinder 9 of a delivery unit 8 is placed below the blanketed impression cylinder 2, and a chain 10 is placed leftwardly of the delivery cylinder 9 in the drawing without crossing a space below a position of contact between the circumferential surfaces of the blanketed impression cylinder 2 and the blanket cylinder 3.
  • transfer cylinders (transport cylinders) 12 to 15 which have gripper devices and transfer paper (sheet-like material) from a register 11 to the blanketed impression cylinder 2.
  • a transfer cylinder (transport cylinder) 16 which has a gripper device and transfers paper from the blanketed impression cylinder 2 to the delivery cylinder 9.
  • paper which has been fed from a feeder 17 and positioned by the register 11, is transported along a path indicated by arrows in the drawing, namely, along the circumferential surfaces of the transfer cylinders 12 to 15 ⁇ blanketed impression cylinder 2 ⁇ transfer cylinder 6 ⁇ delivery cylinder 9.
  • the paper passes the point of contact between the blanketed impression cylinder 2 and the blanket cylinder 3 from above to below, the paper is printed.
  • the transfer cylinder 15, as a guide device for paper 20, is slightly spaced from the blanketed impression cylinder 2, and the peripheral speed of the transfer cylinder 15 is made slightly higher than the peripheral speed of the blanketed impression cylinder 2, in a range in which gripping change of the paper 20 by the blanketed impression cylinder 2 can be performed.
  • An air nozzle (air blowing means) 21 for blowing air between the paper 20 and the circumferential surface of the blanketed impression cylinder 2 is provided upstream from the point of gripping change from the transfer cylinder 15 to the blanketed impression cylinder 2.
  • a suction chamber (suction guide) is provided between the transfer cylinder 15 and the blanket cylinder 3 along the circumferential surface of the blanketed impression cylinder 2.
  • the suction chamber is divided into a plurality of parts (three parts in the drawing; herein termed suction chambers 23a to 23c) in a flowing direction of the paper.
  • suction chambers 23a to 23c are connected to a negative pressure source (e.g., a vacuum pump; not shown). Clearances between guide surfaces of the suction chambers 23a to 23c, which comprise arc-shaped porous plates, and the circumferential surface of the blanketed impression cylinder 2 are progressively narrowed in the flowing direction of the paper.
  • the paper 20 when the paper 20 is transferred from the transfer cylinder 15 to the blanketed impression cylinder 2 after gripping change, and transported toward the contact point (printing point) between the blanketed impression cylinder 2 and the blanket cylinder 3, the paper 20 is attracted by suction to the suction chambers 23a to 23c, and moved along the guide surfaces.
  • the paper 20 is transported up to the printing point without touching the circumferential surface of the blanketed impression cylinder 2.
  • air blown from the air nozzle 21 enters between the transferred paper 20 and the circumferential surface of the blanketed impression cylinder 2, so that the paper 20 does not touch the circumferential surface of the blanketed impression cylinder 2.
  • the air pushes out the paper 20 toward the guide surfaces of the suction chambers 23a to 23c, facilitating suction of the paper 20. Blowing of air to the trailing edge of the paper is stopped to avoid irregular movement of the trailing edge.
  • the transfer cylinder 15 is slightly spaced from the blanketed impression cylinder 2.
  • the paper 20 undoubtedly does not touch the circumferential surface of the blanketed impression cylinder 2, and air easily enters the gap between the paper and the circumferential surface of the blanketed impression cylinder 2, thereby promoting ease of suction.
  • the peripheral speed of the transfer cylinder 15 is slightly higher than the peripheral speed of the blanketed impression cylinder 2, so that the trailing edge of the paper is moderately relaxed, and ease of suction is promoted.
  • the transfer cylinder 15 may be composed of a suction cylinder so that the paper 20 can be attracted by suction to the circumferential surface of the transfer cylinder 15.
  • the paper 20 is reliably prevented from touching the circumferential surface of the blanketed impression cylinder 2, and air is admitted more easily, thus increasing ease of suction.
  • the clearances between the guide surfaces of the suction chambers 23a to 23c and the circumferential surface of the blanketed impression cylinder 2 are progressively narrowed as the paper flows.
  • the paper 20 does not fall off, but smoothly travels, up to the contact point (printing point).
  • the paper 20 is printed without its prior touch to the circumferential surface of the blanketed impression cylinder 2.
  • the paper 20 does not smudge.
  • the suction chamber is divided into plural parts, i.e., suction chambers 23a to 23c. These divisional suction chambers 23a to 23c are easy to assemble and mount, and their sucking power can be increased.
  • FIG. 3 is an enlarged view of an essential part of a perfecting multicolor offset press showing a second embodiment of the present invention.
  • a plurality of fans 24 are mounted on a suction chamber 23 to attract paper 20 by suction to a guide surface of the suction chamber 23 which comprises an arc-shaped porous plate.
  • Other features of the present embodiment are the same as in the first embodiment.
  • the present embodiment enables the paper 20 to be attracted with a relatively weak force, thus presenting the advantage that the paper flows smoothly along the guide surface.
  • FIG. 4 is an enlarged view of an essential part of a perfecting multicolor offset press showing a third embodiment of the present invention.
  • transport (suction) belts 25a to 25d are passed over a plurality of suction chambers 23a to 23e, and the transport belts 25a to 25d are rotated at the same speed as the peripheral speed (paper speed) of a blanketed impression cylinder 2 by a motor 27 via a drive belt 26.
  • Other features are the same as in the first embodiment.
  • the present embodiment avoids the situation that paper held by a gripper device is dropped off by the sucking force of a suction guide (namely, because of an excessive sucking force).
  • the paper can be transported reliably.
  • scuff or scratch of the paper due to contact between the paper and the guide surfaces of the suction chambers can be prevented, because the transport belts are present between the paper and the guide surfaces.
  • the holding device may be changed from the gripper device to a suction holding device, and the suction chamber may be changed from the divisional suction chambers to an undivided suction chamber.
  • the holding device may be changed from the gripper device to a suction holding device, and the suction chamber may be changed from the divisional suction chambers to an undivided suction chamber.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Press Drives And Press Lines (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Paper (AREA)
  • Cleaning In Electrography (AREA)
EP01105427A 2000-03-17 2001-03-13 Führungsvorrichtung für blattartiges Material einer Druckmaschine für Schön- und Widerdruck. Expired - Lifetime EP1136260B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000075045A JP4494577B2 (ja) 2000-03-17 2000-03-17 両面印刷機のシート状物案内装置
JP2000075045 2000-03-17

Publications (3)

Publication Number Publication Date
EP1136260A2 true EP1136260A2 (de) 2001-09-26
EP1136260A3 EP1136260A3 (de) 2003-09-10
EP1136260B1 EP1136260B1 (de) 2009-07-29

Family

ID=18592993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01105427A Expired - Lifetime EP1136260B1 (de) 2000-03-17 2001-03-13 Führungsvorrichtung für blattartiges Material einer Druckmaschine für Schön- und Widerdruck.

Country Status (6)

Country Link
US (1) US6470798B1 (de)
EP (1) EP1136260B1 (de)
JP (1) JP4494577B2 (de)
AT (1) ATE437755T1 (de)
DE (1) DE60139363D1 (de)
ES (1) ES2330504T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2127873A1 (de) * 2008-05-28 2009-12-02 Komori Corporation Blattmonitor für Schön- und Widerdruckmaschine
EP2682266A1 (de) * 2012-07-03 2014-01-08 Komori Corporation Perfektor

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10033838A1 (de) * 2000-07-12 2002-01-24 Roland Man Druckmasch Einrichtung zur Bogenführung
DE10158486A1 (de) * 2001-01-05 2002-07-11 Heidelberger Druckmasch Ag Einrichtung zur Trennung benachbarter flächiger Exemplare
DE10310690A1 (de) * 2002-04-12 2003-10-30 Heidelberger Druckmasch Ag Bogenführungseinrichtung in einer bogenverarbeitenden Maschine
DE10332213B3 (de) * 2003-07-16 2004-08-19 Koenig & Bauer Ag Bogendruckmaschine
JP4559208B2 (ja) * 2004-12-01 2010-10-06 株式会社小森コーポレーション 反転機構付枚葉輪転印刷機
US20080223236A1 (en) * 2006-05-02 2008-09-18 Komori Corporation Sheet processing device
CN102700243B (zh) * 2011-03-28 2016-04-06 海德堡印刷机械股份公司 用于输送页张的装置
CN102950881B (zh) * 2011-08-31 2016-04-27 威海印刷机械有限公司 一种表格印刷机的防蹭脏装置
JP6075598B2 (ja) * 2012-07-03 2017-02-08 株式会社小森コーポレーション 両面印刷機の検査装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1521864A (en) * 1976-01-30 1978-08-16 Mohn Ohg Reinhard Method and apparatus for simultaneously printing sheets on both sides
EP0016938A1 (de) * 1979-04-09 1980-10-15 Heidelberger Druckmaschinen Aktiengesellschaft Bogentransporttrommel an Rotationsdruckmaschinen
US4640189A (en) * 1983-07-26 1987-02-03 De La Rue Giori S.A. Rotary multicolor machine for simultaneously printing both sides of a paper web or sheet
JPH01316268A (ja) * 1988-06-17 1989-12-21 Komori Printing Mach Co Ltd 両面多色オフセット印刷機
DE4318777A1 (de) * 1993-06-05 1994-12-08 Kba Planeta Ag Einrichtung zur Unterstützung der Bogenführung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5722931U (de) * 1980-07-11 1982-02-05
EP0306684B1 (de) * 1987-09-11 1992-04-08 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Vorrichtung in Mehrfarbenbogenrotationsdruckmaschinen zum Anpressen eines Bogens auf den Druckzylinder
JPH022595A (ja) 1988-06-14 1990-01-08 Hitachi Ltd 表示端末装置のカーソル制御方式
US5156090A (en) * 1989-06-24 1992-10-20 Heidelberger Druckmaschinen Ag Device for smoothing a sheet on an impression cylinder of a sheet-fed rotary printing machine
DE4434778C1 (de) * 1994-09-29 1995-11-30 Roland Man Druckmasch Bogenführungsmodul für eine Wendeeinrichtung in einer für Schöndruck oder Schön- und Wiederdruck einsetzbaren Rotationsdruckmaschine
JP3708598B2 (ja) * 1995-10-03 2005-10-19 株式会社小森コーポレーション 印刷機の紙案内装置
DE19833901A1 (de) * 1998-07-28 2000-02-03 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zur Übergabe der Hinterkante eines Bogens in einer Wendeeinrichtung einer Bogenrotationsdruckmaschine
DE29818343U1 (de) * 1998-10-14 2000-02-24 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Bogendruckmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1521864A (en) * 1976-01-30 1978-08-16 Mohn Ohg Reinhard Method and apparatus for simultaneously printing sheets on both sides
EP0016938A1 (de) * 1979-04-09 1980-10-15 Heidelberger Druckmaschinen Aktiengesellschaft Bogentransporttrommel an Rotationsdruckmaschinen
US4640189A (en) * 1983-07-26 1987-02-03 De La Rue Giori S.A. Rotary multicolor machine for simultaneously printing both sides of a paper web or sheet
JPH01316268A (ja) * 1988-06-17 1989-12-21 Komori Printing Mach Co Ltd 両面多色オフセット印刷機
DE4318777A1 (de) * 1993-06-05 1994-12-08 Kba Planeta Ag Einrichtung zur Unterstützung der Bogenführung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 119 (M-0945), 6 March 1990 (1990-03-06) & JP 01 316268 A (KOMORI PRINTING MACH CO LTD), 21 December 1989 (1989-12-21) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2127873A1 (de) * 2008-05-28 2009-12-02 Komori Corporation Blattmonitor für Schön- und Widerdruckmaschine
EP2682266A1 (de) * 2012-07-03 2014-01-08 Komori Corporation Perfektor
CN103522733A (zh) * 2012-07-03 2014-01-22 小森公司 双面印刷机
US9446582B2 (en) 2012-07-03 2016-09-20 Komori Corporation Perfector
CN103522733B (zh) * 2012-07-03 2017-04-12 小森公司 双面印刷机

Also Published As

Publication number Publication date
ATE437755T1 (de) 2009-08-15
EP1136260A3 (de) 2003-09-10
DE60139363D1 (de) 2009-09-10
JP4494577B2 (ja) 2010-06-30
EP1136260B1 (de) 2009-07-29
US6470798B1 (en) 2002-10-29
JP2001260319A (ja) 2001-09-25
ES2330504T3 (es) 2009-12-11

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